Container



Nov. 21. 19.39. A. wElSENBuRG 2,180,891l

iCONTAINER med sept. 16, 193s s sheets-sheet 1 Nov. 21, 1939.

A. wElsl-:NBURG CONTAINER 3 Sheets-Sheet 2 Filed Sept. 16, 1936 .IIE :III... El... ...I-III...

Patented Nov. 21, 1939- CONTAINER.

I .Andrew Weienburg, Philadelphia, rs., assigner to Crown Can- Company, Philadelphia, Pa., a

corporation of Pennsyl Application September 16, 1936, Serial No. 101,127

1 Claim. -(Cl. 22B-42) The present invention relates to containers.

l Particularly containers ofthe type having a longitudinal side seam, and the principal object of the invention is to provide such a container with 5 a seamless neck ring which willinsure that the closure will maintain a tight seal, andwhich will at thesame time permita substantially full pouring opening from the mouth of the container.

Another object of the invention is to provide a container having a resilient seamless neck ring, so that when a closure of the plug type is used, it will tightly engage the interior ofthe neck ring to maintain an edective seal. A

-Another object o f the invention is to provide such a resilient neck ring so positioned'within the end of the -container that it will be supported by the side walls of the container when a plug type closure is inserted. i

Another object ofthe invention is to provide a seamless neck ring secured to the open end of a container by a double lock seam without having raw edges of metal exposed on the outside of the seam.

A further object of the invention is to provide a seamless neck ring which may be secured by a double lock seam to the open end of a container with the use'of a chuck and seaming roll of simple construction.

Another object of the invention is to provide y a seamless neck ring. Which when seamed to the open end of, a container by a double lock seam,

will reinforce the open endof the container.

Another object of the invention is to providev a seamless neck ring which is adapted to receive and be securely engaged by either a plug or cap type closure, provision being made for the latter type closure in that an external double lock seam .of increased strength results from seeming a ring of the present invention to the open end of the container.

f A further object of the invention is to provide a neck ring which is fabricated from a minimum amount oi' metal and also to provide for the saving of metal by fabricating the neck ring andl plug closure from the same blank oi' metal without wastingany of the same.

The container o! the present invention is adapted for use in the packaging of various materials. either liquid ordry. Among the dry materials such articles as cigarettes, mints, and coffee may be conveniently packaged in the container, and these articles may be packaged in the container with or without vacuum.

However, the improvements of the present invention are ymost 'outstanding when the container is used for the packaging lof liquid products Asuch as paints, which are used directly from, the container, being taken therefromV with a brush. When paints are used in this fashion, it is often desirable to reapply the closure with the 5 V expectancy of again removing the same, and the improvements of the present invention permit such use while maintaining an effective closure seal at al1 times. i

'I'he drawings illustrate several forms of the 10v invention, and it is understood that the disclosures of the drawings are lfor purposes of 'illustration and in no sense restrict the invention to the particular applications shown. 1

Figure 1 shows a. blank of material such as l5 metal from which the seamless neck ring and the 'closure are fabricated.

Figure '2 showsone of the early steps in the fabrication of the seamless neck ring and closure.

Figures 3, 4,' 5 and 6 disclose succeeding steps 20 in the formation of the seamless neck ring.

Figure 7 shows a conventional can body having a longitudinally side seam, to which the seamless neck ring and closure of the present invention is applied. 25

Figure 8 illustrates a-further step in the manufacture of a container of the present invention, this gure showing the seamless neck ring positioned within the open'end of a'can body before the ring is secured thereto. 30

Figure 9shows the manner in which a chuck and seaming roll of simple construction may be utilized in securing the neck ring to a can body by a double lock seam.

Figure 10 shows an assembled can body and 35 seamless neck ring with a plug type closure positioned in the neck ring.

Figures 11, 12 and 13, 14 are similar to Figures 8 and 9, showing modiiled forms of the invention.

Figures 15, 16 and 17, 18 disclose modications 40 of the seamless neck ring. 4 l

Figures 19, 20 and 21 disclose successive steps in forming the seamless neck ring in accordance with a modiiication of the method disclosed in Flgureslto6inclusive. 45

Figures 22, 23 and 24 show successive steps employed in the formation of the plug typeclosure, y starting with the blank resulting from the operation illustrated in Figure 2.

Figure 25 is a side elevational view of the clo- 50 sure showing its application to a container.

Figure 26 illustrates the manner in which an outside cap suchl as a conventional crown cap, may be used in covering a container employing a neck ring oi' the type disclosed in Figure 18.

seal the open end of the container. After the contents of the container have been partially used, `it

may be necessary to reapply the closure, and an eiective seal is required after thisreapplication to prevent the contents of the container from drying out. AIn the manufacture of metal containers such as cans, it is conventional to employ a side seam extending longitudinally throughout the length of the can, and if ordinary type closures are used in conjunction with such containers, leakage' will result at the side seam if it is attempted to replace the closure after the can is initially opened.

To meet this dimculty it has been the practice to equip cans having the longitudinal side seam with some form of seamlessv neck ring, the ring being adapted to receive a closure of the plug type to provide an eiiective seal therewith.

These containers are-usually equipped with a seamless neck ring such diameter that it extends from the side wall of the container inwardly toward the axis thereof a material distance, so that free flow through the open end of the containerl is prevented. This type of ring usually has a at upper surface extending inwardly over the openv end of the container terminating in a downwardly directed iiange which provides a sealing area for the reception of a plug type closure. Such a construction results in a pocket being formed around the outside of the closure receiving ange, in which some of the liquid is trapped when the contents are flowed from the container cr when the container is shipped in inverted position. In connection with the use of paints, such liquids usually solidify resulting in a material wastage of the same, The construction and manner of assembly ot the seamless rings of the present invention results not only in a tight closure for the open end of the container, but also in an arrangement which permits substantially a full flow opening from the container mouth, Without the paint collecting within a pocket around the sealing ring and withinzthe can. The construction of the seamless ring and its arrangement at the open end of the container also on the top of the can around the seamless ring,

during the time when the paint is being taken from the container with a brush.

In Figure l., ill designates a blank of metal preferably circular in form if the container is of cylindrical shape, which is generally the case. Blank III is rst stamped or otherwise formed into substantially hat shape as shown in Figure 2,' and this hat shaped blank is severedalong its cylindrical portion to form a seamless ring R and a plug type closure C. As illustrated in Figure 2, the blank may be cut along the diametrical plane II. l

` After the above severing operation, the seamless ring blankl R is in the form shown in Figure 3. The lower end of the blank R, as viewed in Figure is then bent outwardly and upwardly conveniently in successive steps, as shown in Figures 4,- and 6, to shape the seamless ring into its final condition lbefore application tothe container. During and after these steps, the seamless ring comprises a central portion I3, an -upper flanged portion I4 and a lower outwardly and upwardly bent portion I5. all for a purpose which l will be hereinafter described.

By upper and lower I mean to designate the relative positions `ofgportions Il and I5 with rel 'arsooi closure, such as one of the plug type.

insures that no paint will collect Y spect to the central portion I3, when the .sealing ring is in the position .illustrated in yFigures 4, 5 and 6, which will be the normal position ofthe ring when it is positioned withina container and when the latter is in its normal upright position.

As illustrated, the lower portion I5 may be bent outwardly through an angle of 45, as shown in.

Figure 4, further bent upwardly to the 90 position of Figure 5, and then bent through an additional angle of 45 or more to the position shown in Figure 6. The portion I5 may be bent to a greater or less extent toward the central portion I3 as desired, from the position shown in Figure 6 to, for instance, a position in which the portion I5 would lie substantially parallel and flat against the outer wall of central portion Il. At any rate, it is desirable to have portion' I5 flare outwardly from portion I3 some slight extent for a reason which will later appear.

Figure '7 shows a. conventional container such as a metal can I1 which is formed from a rec- A'securing of the seamless neck ring in a manner which will later appear..

It will be apparent that byreason of the distortion of the cylindrical surface of the container caused by the .side seam I8, it is dificult to tightly seal the open mouth of the can with a removable Consequently, it is necessary to provide some means for making the inside of the open end of the container uniform in contour and this is accomplished by providing a seamless neck ring of the type disclosed in the present application.

In Figure 8, the seamless neck ring as formed to the condition of 'Figure 6, is shown positioned in the open end of the container `A, with the upper iiange I4 of the ring resting upon the outwardly turned iiange I8 of the can. When the ring is -in this position, it will be noted that the central portion I3 thereof is closely adjacent to and in substantially parallel relation with the inner wall of the container A,- and that the outwardly and upwardly bent portion II is disposed between the inner wall of the container A and the outer wall of the central portion I3 of the ring.

When the parts are in this condition, the ring may be secured to the cntainer body in any convenient manner, but preferably as shown in Figure 9 by rolling the anges I4 and I8 of thev ring and container respectively into a double lock seam. In rolling the double lock seam, provision must be made for supporting the interior of the ring during the operation of the seaming roll B, which is forced inwardly against the flanges I4 and I8 and is of such contour that it `bends said anges down into the double lock seam of Figure 9 in a manner well known in the art. To

support the interior of the ring jand container during the seaming operation, a chuck D of vinserted into the open end of the container as shown. It will be observed that the chuck D tapers inwardly and downwardly on its outer wall where it engages the centralportion I3 of the seamless ring, so that there willbe'no appreciable 75 B,v it will be apparent that vthe rolling of the double lockl seam Awill not flatten the outwardly and upwardly turned portion I5 against the wall ofthe `container or against the central portion I3 of the ring to suchan`extent that all of the resiliency in portion I5 will be removed. I'hat is, the end of the bent up portion I5 will bear against the inner wall oi' the container, giving, the lower end of the central portion I3 of thee seamless ring a degree of resiliency, and the bent up portion l5 will provide a spring like resistance to the expansion of the lower end of thel portion I3 of the ring when a plug type closure is in 'of Fig. 9 engages the inner wall of the container at an acute angle thereto, so that the resiliency of the lower end of the ring is not destroyed, asI would be the case if the portion I5 were disposed at right angles to the central portion I3, and

' engaged the inner wall of the container at right been formed from the blank C cut as in Figure 2,

angles thereto;

'Ihe closure is positioned within the seamless ring as shown in Figure 10. said closure having byl following successive steps as illustrated in Figures 22, 23 and 24. centrally bent to have a dome-shaped portion 2|', which prevents adjacent containers from becoming stuck together when stacked in a manner v well known in the art, as will be obvious from has been initially removed. As shown in Figure.

slightly greater at its lower end than the-inner diameter of the lower end of the ring I3, when the closure is removed. When the closure is inserted, the lower end of the central portion I3 will be flattened outwardly against the upturned. portion I5 of the ring, the latter being supported by the inner wall of the container A, but capable of flexing movement with respect thereto, in view of the fact that the end of the upturned portion engages the wall at an acute angle. This resiliency will provide a tight seal between the closure and ring. and will permit the closure to be reapplied toform a tight seal after the closure 10, the lower end of the closure C moves downwardly beyond the lower end of the ring when the closure is inserted, and any compression of the lower end of the closure caused during the insertion will be relieved after complete insertion..

permitting the lower end 26 of the closure to expand outwardly to4 a slight extent beneath the 'I'he closure may be4 lower edge of thek ring, thus furtherinsuring a tight seal.

When the closure is in inserted position as in Figure 10, the bead 25 thereof will rest upon the upper edge of the double lock seam, thus limiting the inward movementy of the closure. A coin or other implement maybe inserted between the bead 25 and the upper edge' ofthe can to assist in removing the-closure.

-When the closure is removed, the outwardlyl .and upwardly bent portion I5 will cause the lower end of the ring to spring from its compressed position of Figure 10 to its relieved position of- Figure 9.

InfFigures 11 and 12 a modification of the invention is disclosed in which a sealing'compound 30 is employed between the flange Il of the seamless ring and the flange I8 of the container body.

Any well known sealing compound may be used.

and it may be flowed onto the lower surface of the flange I4` when the ring is in inverted position and allowed to solidify, after which the ring may be positioned on the container as shown in Figure 1l. When the double lock seam is rolled, as shown in Figure 12, the sealing compound will be compressed within the folds of the double lock seam, further insuring against leakage. While it may be desirable in some cases to utilize this sealing compound, it has been found'that a tight seal may be formed by practicing the present invention without the use of the same.

In Figures 13 and 14 a modication of the invention is shown wherein the upturned portion I5 of the ring is bent upwardly until it lies substantially flush against the outer wall of the central portion I3 of the ring, and when this type of seamless ring is positioned within the mouth of the container, the up-turned portion l5 will be substantially in complete surface contact with the outer wall of central portion I3 and the inner wall of thecontainer. When using this construction, a chuck of increased taperv may be employed when the double lock seam is formed, so that the inner wall 0f the central portion I3 will taper inwardly and downwardly vend of portion I5 where it merges with the lower end of central portion I3 will be spaced slightly from the inner wall of the container, so that the lower bend of the seamless ring may be expanded outwardly around said fulcrum during insertion of the closure, providing resiliency which will result in intimate engagement of the closure with the ring. v

In lthe above described embodiments, it will be noted that the double lock seam is of sub stantial size, having a vertical dimension substantially half as long as the length of the cen-- tral portion I3 of the neck ring. It will also vbe noted that said seam extends downwardly substantially to the transverse plane through the axis of the container in which the end of the upturned portion I5 is located.

A further modification of the invention is disclosed in Figures 15 and 16, in which embodi ment the outwardly bent portion 35 of the ring extends upwardly to substantially the upper end of the container body as shown at 36. Such an arrangement, while employing an additional amount of metal,'.'will increase the strength of if a ansa-sai the mouth of the container and will result in a stronger double lock seam. In this modiilcation, as in the forms of the invention hereinbefore described, a tapered chuck will be used during the rolling of the double lock seam, so

that the lower end of the upwardly` bent portion 35 of the ring will not be entirely flattened against the inner vwall of the container during the rolling of the double lock seam, and resil iency will be provided adjacent the lower end ,of the ring to permit tight engagement with the inserted closure.

A further modification of the invention is shown in Figures 17 and 18. In this form of the invention, the outwardly turned lportion 31 of the ring extends upwardly throughout substantially the length of the central portion i3, and is then bent outwardly through an angle of approximately 9, forming a. ilange 38 which lies 2g between the upper flange i4 ofthe seamless ring and thehorizontal ange i8 of the container body, as shown in Figure 17. When this form of the ring is assembled as shown in Figure 1'?, thedouble lock seam may be rolled as hereingg, before disclosed. As in the other forms of the invention, a tapered chuck may be utilized in order that the desired resiliency will result at the lower end of the ring. It will be apparent that in this form of invention, a more bulky and 3,@ stronger double lock seam will result, although appreciably more metal will be necessary in the formation of the seamless ring.

it will be noted in the above described embodiments, that the central portion i3 o the .35 necir. ring is smooth and straight on its interior and'evenly tapers downwardly and inwardly from the end of. the body to where the portion i5 is bent upwardly therefrom, so that 4said bend is slightly spaced from the inner wall of the container, the neck ring thereby being resilient at said bend as the latter is adapted to yield outwardly upon the insertion of a closure of the plug type into said ring. i

While it is more economical to form theseam- 5 less ring and closure from the same blank as 1 disclosed in Figures 1 to 6 and 22 to 24 inclusive, the seamless ring alone may be formed from a blank of metal 'as shown in Figures 19, 20 and 2l. In these figures, the initial at blank is shown at it", and this blank may be stamped into the hat shaped form disclosed in Figure 20, laliter which the lower horizontal portion 40 of the hat shaped blank may be cut away as shown in Figure 21. The blank R resulting is of the same configuration as shown in Figure 3, and this traten in Figures 4, 5 and 6 to form the seamless ring. The removed blank 40 may then be disposed of, or it may be used in the formation of a@ seamless rings, closures and the like for smaller containers.

In 4Figure 25, a. closure as formed in Figures blank may then be subjected to the steps illus-- 22-24 is shown applied to a container. The bead 25 of the closure may be attened at spaced points shown at 25', in `order to permit the insertion of a tool beneath the bead to assist in removing the closure. 5 In Figure 26, an application of the invention is disclosed in which the container A may be sealed by an outside cap closure suchas a conventional crown cap 45. It will be observed that a seamless ring and double lock seam of the l0 type disclosed in Figure 18 is used, it being evident that the increased bulk of the seam formed will provide a sufiicient shoulder as at 48 on the lower edge of the double lock seam to be gripped by the indentations 41 in the lower skirt l5 portion of the crown cap. While this form of the invention lends itself most admirably to the reception of an outside cap closure, the forms of seamless rings shown in Figs. 13 and 14 might also be used with an outside closure.

The invention thus provides a seamless ring which will permit sealing of the container by either an inside plug type closure or an outside cap type closure. It will be evident in Figure 26 that a tight seal will-be formed at the upper edge 48 of the double lock seam, by the engagement of this edge with the packing disposed Vwithin the top of the crown cap.

Various modifications of the constructions shown herein may be made without departing 30 from the scope of the invention.

I claim:

A cylindrical container having a body formed with a side seam, a seamless neck ring in an end of said body against the inner wall thereof to provide a substantially full pouring opening from the container, said ring having a central portion tting within the end of the body, an upper portion secured to the edge of the body and a lower portion bent outwardly and upo wardly between the inner wall of the body and the outer wall of the central portion of said ring, the end of said outwardly and upwardly l bent portion contacting the inner wall of the body at an acute angle thereto a sulcient distance above the bend of said ring to form a fulcrum at the point of contact for said ring at its bend, the central portion of said ring tapering downwardly andA inwardly from the end of the body to the bend of the lower portion of said ring to slightly space said bend from the inner wall of the container, said ring being thereby resilient at its bend and adapted to yield outwardly thereat, said container being adapted to removably receive a closure of the plug type within said ring, which closure engages said ring at its bend and expands the same around said iulcrum to form a tight sealbetween the closure and said ring, the 4bend of said ring being adapted to spring inwardly from the container w wall when the closure is removed.

' ANDREW WEISENBURG. 

